Thanks for the response. I have one more question specific to my own layout plans. I intend to use Micro Engineering code 55 flex track on a switching layout. There are no commercial switches made with code 55 rail, so I am going to use Central Valley plastic tie strips for the switches with Micro Engineering code 55 rail. I think I can slide the rail into the Central Valley tie strips like flex track and just need to cut and file the points to fit. I'll get frogs from the Proto 87 Store. They offer frog castings in both proto 87 and NMRA standard sizes. I expect I'll be able to install the Central Valley tie strips like I would flex track with track nails. I might glue the tie strip with construction adhesive just making sure to keep the adhesive away from the area around the throwbar in which case I would not need any nails. I need to go to Los Angeles to inspect the track work of the Los Angeles Junction Railway again, but I think their track is laid right on grade with no ballast if I remember correctly. Do you see any possible problems that I'm not addressing with my plans?